Oil-cup eoe



UNITE STA A E OFFICE.

R. ROSS AND W. HOLLAND, OF PHILADELPHIA, PENNSYLVANIA,

OIL-CUP FOR MACHINERY.

To all whom it may concern:

Be it known that we, ROBERT Ross and IVM. HOLLAND, both of Philadelphia,in the. county of Philadelphia and State of Penn- Sylvania, haveinvented an Improvement in Oil-Oups, and that the following is a full,clear, and exact description of the principle or character whichdistinguishes it from all other things before known and of the usualmanner of making, modifying, and using the same, reference being had tothe accompanying drawings, Of which- Figure l is a perspective view ofthe oil cup; F ig. 2, a vertical middle section.

Our invention consists in an improvement in Oil cups for feeding Oil tosteam cylin ders and other parts of machinery under Jressure, describedand represented as foliows.

a is a hollow metallic ball or globe forming what we denominate theintermediate chamber To the lower part of this globe is attached a screwplug c, for insertion into the steam cylindei1 Or other part to belubricated under pressure. This plug has a passage Z through its axis,through which Oil is introduced into the cylinder. At the upper part ofpassage d is a valve seat adapted to the lower end of the valve plug e,and the passage Z communicates with chamber b by the lateral passagesd', e. The valve plug e has a screw thread upon its lower portion whichworks in a thread cut in the upper part Of the screw plug c. The upperportion f of the valve plug c is made of square or polygonal form, tofit the corresponding bore of the key portion 7c of the spring valve rodor stem It, by which the screw valve is to be turned back and forth andthus opened and closed.

The glo-be a is surmounted by an Open cup m into which the oil is tO befirst poured, to be fed into the chamber b, through the passage fm whichcontinues from the bottom of this cup to the chamber b. The Valve stem ipasses through passage m with sufficient space around the stem to admitthe free flow of Oil to chamber Z). The upper part of the stem passesthrough a collar n on the bridge piece r which extends across the top ofthe cup. rlhe upper part of the key portion 7c Of the stem z, is madeconical to fit the valve seat s in the upper part of chamber b. Thespiral spring t presses the stein upward and closes valve s.

Then oil is to be introduced into the intermediate chamber the stem isforced downward and the oil poured into cup m flows down around the stemwhile the air from chamber b escapes upward through the passage u in thestem L, the steam passage Z having been previously closed up by thevalve c. Then sufficient Oil has been introduced into chamber b, thestem It is allowed to rise and close the valve s by the action of springt and by then turning the handle a in the proper direction the key lvunscrews and raises valve e and allows the Oil to flow into the steamcylinder, the previous closing of valve s preventing the escape ofsteam. lVhen sufficient Oil is introduced, the valve e is closed, valves remaining always closed except when the stem z. is depressed.

What we claim as our invention and improvement in Oil cups isl. Thecombination of the spring valve stem 7L with the screw valve e in theintermediate chamber as set forth each operating in conjunction with,and at the same time independently of the other to the extent and in themanner herein above set forth.

2. We also claim the air passage u, within the stem L, in combinationwith the Oil passage m around the stem It, in the manner set forth.

ROBERT ROSS. VILLIAM HOLLAND. Titnesses GEO. MOORE, JACOBS. MCCARRA.

